[Mailman-Users] Trapping posts with no subject, and an apology

Mark Sapiro msapiro at value.net
Fri Mar 23 02:09:45 CET 2007

Mike Maughan wrote:
>I've implemented the recommendations; now all I have to do is decipher your
>regex :))

>> $subject:\s*(\(no[_ ]subject\))?\s*$

Ooops! It's wrong. It should be

^subject:\s*(\(no[_ ]subject\))?\s*$

The original wouldn't match anything.

It says:

^ - the start of the line
\s* - zero or more white space characters
( - beginning of a group (this is why your original try didn't work)
\( - a literal (
[_ ] - a single underscore or space (character class)
\) - a literal )
) - end of the group
? - zero or one occurrences of the preceding re, in this case what's
    in the parentheses
\s* - zero or more white space characters (doesn't match \n)
$ - the end of the line

Mark Sapiro <msapiro at value.net>       The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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